Kemampuan Pemangsaan Menochilus sexmaculatus F. (Coleoptera: Coccinellidae) terhadap Rhopalosiphum maidis Fitch (Homoptera: Aphididae)



In nature many different types of prey encountered, but information concerning the ability of predators to preys on the prey is still less The goals of this research was to knew functional response i.e. the relationship between ability of individual M. sexmaculatus to eat prey (R. maidis) on differential population density. The hypothesis of The study was the more availability of prey (R. maidis) and the older of predator stages M. sexmaculatus), then predation ability would growing up. The research method is to place directly larvae (first instar and fourth instar) and adult female M. sexmaculatus predator was on its prey, R. maidis, in a variety of population densities with first instar nymphs, the fourth and adult The result of this study shown that the ability to predation of young and adult of M. sexmaculatus was Type II to R. maidis, so it was categorized as effective biological control agent. Ability to predation of adults stages of M. semaculatus is better than young stages. Based on analysis of non linear regression, to the maximum predation of female adults of M. sexmaculatus was 300 various stage of R. maidis per 24 hours.

KEY WORDS: Functional response, M. sexmaculatus and R. Maidis.

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